So I tuned my setup with a stock exhaust and have recently upgraded to a 2.5 all the way back. Wondering if my a/f has really changed enough to worry about running a bit lean. I know I need to get on a wb to really tell but any input is appreciated.

 

the only thing i can think of is if it is getting some boost creep now and you tuned it at say 8 psi, then maybe you would need to tune the cells from 8-10 psi if its hitting more boost....but if its not boost creeping at all it should be fine...

 

the boost has held steady

 

did you notice a power increase?

if it was severe enough to notice on the butt dyno i would say yes...get a wideband on it to at least check where you are at.

If you tuned it conservatively before though...you should be relatively fine now

 

thanks for the input......I have access to a wb but its just been too cold out but hopefully it'll be warm next week

 

Cold and freeing flowing exhaust dont make for a good combo...dont rape your motor, you may be running lean. pay attention and listen carefully for detonation.

 

Yeah I've been told but I can't help it, everytime I see drive pavement :P. It's definately making more power but new exhaust is louder now so I can't even hear ping anymore. I'm going to have to start laying off it till I retune.